Apparatus for the production of gelatin pictures.



' PATENTED APR. 18, 1905. P. CHARLES & S. PAUJAT. APPARATUS FOR THEPRODUCTION OF GELATIN PICTURES.

APPLICATION FILED MAY 3, 1904.

2 SHEETS-SHEET 1.

A N i A Q o No. 787,663. PATENTED APR l8, 1905.

P. CHARLES dz S. PAUJAT. I

APPARATUS FOR THE PRODUCTION OF GELATIN PICTURES,

APPLIOATION FILED MAY 3, 1904.

2 SHEETS-SHEET 2.

figfneao'eow- A wewny} A UNITED STATES Patented April 18, 1905.

PATENT OFFICE.

PAUL CHARLES AND STEPHAN FAUJ AT, OF FRANKFORT-ON-THE-MAIN,

GERMANY, ASSIGNORS TO JOE LIVINGSTON, OF FRANKFORT-ON- THE-MAIN,GERMANY.

APPARATUS FOR THE PRODUCTION OF GELATIN PICTURES.

SPECIFICATION forming part of Letters Patent No. 787,663, dated April18, 1905. Application filed May 3, 1904. Serial No, 206,190.

To all whmn it may concern:

Be it known that we, PAUL CHARLES and STEPHAN FAUJAT, merchants,residing at 17 Ludwigstrasse, Frankfort-on-the-Main, Germany, haveinvented new and useful Improvements in Apparatus for the Production ofGelatin Pictures, of which the following is a specification.

Apparatuses for the mechanical production of gelatin pictures have beenproduced characterized by the fact that the molds covered with liquidand colored gelatin act, together with a counter-pressure plate smoothon its whole surface and non-flexible in the direction of its width, insuch a manner that the pressure-plate presses the excess of gelatin fromthe relief-molds, simultaneously bringing the paper or other printingmaterial into close contact with the residue of the gelatin forming thepicture and holding it in its position until the gelatin is congealed.Also apparatus has been produced which comprises a support for therelief-mold, said support being arranged upon springs and beingvertically adjustable by means of lateral bars, which support may bemoved on the under side of a solid counter-pressure plate having a planeand smooth surface in such a manner that the counter-pressure plateremoves the excess of gelatin from the mold while the paper or othermaterial to be printed comes into intimate contact with the gelatincolor and is held in this position until the remaining gelatin color ofthe relief-mold is congealed. The gelatin pictures produced according tothe above-described apparatuses are particularly suitable, on account ofthe exceeding transparence of'the gelatin color, for the production ofpolychrome-printing. It is, however, not possible to producepolychromeprinting by means of the machines described in the saidapparatuses. In order to insure that the separate impressions shallcover each other in polychrome-printing, it is necessary that the papershould always be applied at the same place and that it must remain veryaccurately in its place after having been pressed on the form. Themotion of the long counter -pressure plate composed of laterallyslopedmetal plates in the first-described apparatus is a rocking one. Alsowhen rolling up in the level position a stretching of the endless bandtakes place. On account of these disadvantages it was necessary toconsiderably moistenthe paper. On account of the expansion of the paper,however, this is not possible with polychrome-printing. In thesecond-described apparatus the paper is subdisadvantages are obviated bythe following arrangements: In order to avoid all friction of the paperagainst the counter-pressure plate, the paper is pressed against theprinting-form by means of a roller, and the uniform pressu re upon thepaper after the impression is effected by a light system of rollers.With such employment of a printing-cylinder the possibility is at thesame time afforded to insure the accurate superposition of the severalimpressions with polychrome-printing. The first roller, whichconstitutes the impression-cylinder, is for this purpose provided withthe known arrangement of gripping devices.

WGWIll describe the invention with reference to the accompanyingdrawings, in which Figure 1 shows a longitudinal section of the machine.and Fig. 2 a cross-section.

For efiecting the impression the printingform a is placed upon theadjusting-screws 0, carried by the sliding plate 6, the form beingadjusted to the correct height by means of the said set-screws. Thesliding plate b, which runs upon rollers on its under side,

bears with the rollers upon the metal angular guide-plates (Z. The sheetto be printed upon, whether of paper, metal foil, or the like, is in thefirst instance brought from the tablef to the grippers g of theimpressioncyllnder it, so as to be held thereby in the usual manner. Thegrippers areherein shown in their swung-back or open position. When thecrank-handle i is rotated, the sliding plate 6, together With theprinting-form a, is drawn oyer the guides d by means of the toothedpinions Z? gearing with the toothed racks k. At the same time theimpression-cylinder h is rotated by means of the toothed wheels andracks Z and Z and the sheet after its front edge has come into contactwith the printingform and has been released by the grippers is uniformlypressed upon the printing-form during the continued motion of thelatter.

The cylinder in rolling with pressure over the sheet presses the excessof the liq uid-gelatin color from the printing-form,. and the rollers ithold the paper tightly upon the gelatin remaining in the recesses of theform until it has solidified. After the gelatin has hardened the sheet,together with the gelatin picture adhering thereto, is raised manuallyoff the form after the pressure-plate has been moved below the cylindersfrom right to left. (See Fig. 1.) The sliding plate, together with theprinting-form, is then brought back into the starting position.

In polychromeprinting the pictures are dried after each impression, arecoated with lac, and are again passed through the machine, taking careto accurately maintain the correct position.

When using a sheet that on account of its flexibility remains tightlyadhering to the printing-form after the lmPIQSSiOH RS, for instance,sheets of wax-paper, thin sheets of tin and lead foil, or foilgenerally, &c.the

pressurerollers 71 can under the circumstances be omitted. The metalfoil can for this purpose be coated with white paint, silvered or gilt,or the pictures can be transferred from the wax-paper or metal foil,which in this case must be greased, onto the paper according to theknown method.

In the drawing Fig. 1 the sliding plate, with the printing-form, isshown in the position after having passed under the impressioncylinderb.

What we claim as our invention is-- -1. In apparatus for the productionof gela tin pictures, a roller h adapted to remove the excess of thegelatin color from the printingform, and a plurality of rollers hserving to exert pressure upon the gelatin color remaining in thecavities of the printing-form and upon the paper sheet adhering theretoduring the hardening of the gelatin color, substantially as described.

2. In apparatus for the production of gelatin pictures, a roller 7iadapted to remove the excess of the gelatin color from the printingform,and a plurality of rollers 7L serving to exert pressure upon the gelatincolor remaining in the cavities of the printing-form and upon the papersheet adhering thereto during the hardening of the gelatin color, saidrollers it being adapted to be removed when the apparatus is used forprinting upon flexible sheets of material impervious to moisture,substantially as described.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

PAUL CHARLES. STEPHAN FAUJ AT.

Witnesses HERMAAN WEIL, OsKAR STANDHARD'I.

